I know this is a really dumb question but I don't know the answer. I have heard that the fx-4100 is an fx-8100 with four cores disabled. Would it be possible to make those cores work?
There's only a single Bulldozer die. The 6 and 4 core versions simply feature cores disabled on the die. AMD insists this time around, core unlocking won't be possible on these harvested parts.